CN204419390U - Small air-cooled diesel engine crankcase body radiating structure - Google Patents
Small air-cooled diesel engine crankcase body radiating structure Download PDFInfo
- Publication number
- CN204419390U CN204419390U CN201420779660.XU CN201420779660U CN204419390U CN 204419390 U CN204419390 U CN 204419390U CN 201420779660 U CN201420779660 U CN 201420779660U CN 204419390 U CN204419390 U CN 204419390U
- Authority
- CN
- China
- Prior art keywords
- crankcase body
- cooling duct
- cylinder block
- diesel engine
- mounting hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of small air-cooled diesel engine crankcase body radiating structure, the first cooling duct (6) through before and after the epicoele wall of crankcase body (1) die cavity offers, the root of this first cooling duct (6) adjacent cylinder block (2), and the cross section of the first cooling duct (6) is the elongated rectangular shape of lateral arrangement, the radiating fin (7) that a row is parallel to each other is provided with in the bottom of crankcase body (1), top and the crankcase body (1) of this radiating fin (7) are connected as a single entity, be provided with one at the top of cylinder block (2) along its true dip direction and ranked second cooling duct (8), the cross section of the second cooling duct (8) is also elongated rectangular shape, the length direction of this elongated rectangular shape is vertical with the shaft axis of cylinder block (2).The utility model, by setting up cooling duct on crankcase body and cylinder block, can effectively reduce cylinder of diesel engine temperature, and diesel engine is operated reliable, good stability, rate of fault is few.
Description
Technical field
The utility model belongs to technical field of engines, specifically, and particularly a kind of small air-cooled diesel engine crankcase body radiating structure.
Background technique
At present, the crankcase body of small single-cylinder air cooling diesel engine is generally distributed with radiating fin in the periphery of cylinder block, is taken away the heat in cylinder block by air-cooled mode.Because radiating fin concentrates in cylinder block, and the wall of cylinder block is thicker, the less effective of heat radiation, and the cylinder temperature on diesel engine is still higher, easily affects reliability and the stability of diesel engine, diesel engine is often broken down.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of small air-cooled diesel engine crankcase body radiating structure that effectively can reduce cylinder temperature.
The technical solution of the utility model is as follows: a kind of small air-cooled diesel engine crankcase body radiating structure, comprise casting all-in-one-piece crankcase body (1) and cylinder block (2), crankcase body (1) is provided with starting electrical machinery mounting hole (3), Curved shaft support hole (4) and camshaft mounting hole (5), Curved shaft support hole (4) is positioned between starting electrical machinery mounting hole (3) and camshaft mounting hole (5), its key is: described starting electrical machinery mounting hole (3), the line of centres of Curved shaft support hole (4) and camshaft mounting hole (5) three is generally within straight line, the first cooling duct (6) through before and after the epicoele wall of described crankcase body (1) die cavity offers, the root of this first cooling duct (6) adjacent cylinder block (2), and the cross section of the first cooling duct (6) is the elongated rectangular shape of lateral arrangement, the radiating fin (7) that a row is parallel to each other is provided with in the bottom of described crankcase body (1), top and the crankcase body (1) of this radiating fin (7) are connected as a single entity, be provided with one at the top of described cylinder block (2) along its true dip direction and ranked second cooling duct (8), distance between two adjacent second cooling ducts (8) is equal, the cross section of described second cooling duct (8) is also elongated rectangular shape, the length direction of this elongated rectangular shape is vertical with the shaft axis of cylinder block (2).
Above structure is conducive to starting electrical machinery, bent axle and cam shaft arrangement, each several part is assembled simpler, convenient.First cooling duct of crankcase body die cavity epicoele wall is used for ventilation and heat, to take away the heat at crankcase body top; Row's radiating fin bottom crankcase body also can play the effect of wind-cooling heat dissipating, to take away the heat bottom crankcase body; Cylinder block has in periphery the basis of radiating fin sets up one ranked second cooling duct, and this second cooling duct is used for ventilation and heat, and the radiating fin that the second cooling duct and cylinder block carry combines, and can distribute the heat in cylinder block as much as possible.The utility model can effectively reduce the heat load of diesel engine, and make the cylinder temperature of diesel engine lower, the reliability of such diesel engine and good stability, rate of fault is few.The cross section of the first cooling duct is the elongated rectangular shape of lateral arrangement, and ventilation is large on the one hand, and radiating effect is remarkable; On the other hand, the ingenious thickness that make use of crankcase body die cavity epicoele wall can be shaped, and processing and fabricating is easy, and can not destroy the structural strength of this part of crankcase body.Second cooling duct is arranged in a row, and its cross section is also elongated rectangular shape, and the point that ventilates is many, and ventilation is large, and radiating effect is remarkable equally.
As preferably, have angle theta between the horizontal axis of described Curved shaft support hole (4) and the shaft axis of cylinder block (2), this angle theta is 25-30 °.
Beneficial effect: the utility model by setting up cooling duct on crankcase body and cylinder block, can effectively reduce cylinder of diesel engine temperature, diesel engine be operated reliable, good stability, rate of fault is few, has the features such as design is ingenious, structure simple, transformation is easy, reforming cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, crankcase body 1 and cylinder block 2 are by casting integrated shaping.Crankcase body 1 is provided with starting electrical machinery mounting hole 3, Curved shaft support hole 4 and camshaft mounting hole 5, and starting electrical machinery mounting hole 3 is positioned at the oblique upper in Curved shaft support hole 4, and starting electrical machinery mounting hole 3 and cylinder block 2 are lived apart in the both sides in Curved shaft support hole 4.Camshaft mounting hole 5 is positioned at the oblique below in Curved shaft support hole 4, camshaft mounting hole 5 and cylinder block 2 are positioned at the same side in Curved shaft support hole 4, and the line of centres of described starting electrical machinery mounting hole 3, Curved shaft support hole 4 and camshaft mounting hole 5 three is generally within straight line.Have angle theta between the horizontal axis in Curved shaft support hole 4 and the shaft axis of cylinder block 2, this angle theta is 25-30 °, and the concrete size of angle theta is determined according to actual needs.
As shown in Figure 1, the first cooling duct 6 through before and after the epicoele wall of crankcase body 1 die cavity offers, the root of the adjacent cylinder block 2 of this first cooling duct 6, and the cross section of the first cooling duct 6 is the elongated rectangular shape of lateral arrangement.Be provided with the radiating fin 7 that a row is parallel to each other in the bottom of crankcase body 1, top and the crankcase body 1 of this radiating fin 7 are connected as a single entity, the concrete number of radiating fin 7 and setting highly according to actual needs.Be provided with one at the top of cylinder block 2 along its true dip direction and ranked second cooling duct 8, the distance between two adjacent second cooling ducts 8 is equal, and the concrete number of the second cooling duct 8 is determined according to actual needs.The cross section of described second cooling duct 8 is also elongated rectangular shape, and the length direction of this elongated rectangular shape is vertical with the shaft axis of cylinder block 2.
All the other structures of the present utility model are same as the prior art, and therefore not to repeat here.
Claims (2)
1. a small air-cooled diesel engine crankcase body radiating structure, comprise casting all-in-one-piece crankcase body (1) and cylinder block (2), crankcase body (1) is provided with starting electrical machinery mounting hole (3), Curved shaft support hole (4) and camshaft mounting hole (5), Curved shaft support hole (4) is positioned between starting electrical machinery mounting hole (3) and camshaft mounting hole (5), it is characterized in that: described starting electrical machinery mounting hole (3), the line of centres of Curved shaft support hole (4) and camshaft mounting hole (5) three is generally within straight line, the first cooling duct (6) through before and after the epicoele wall of described crankcase body (1) die cavity offers, the root of this first cooling duct (6) adjacent cylinder block (2), and the cross section of the first cooling duct (6) is the elongated rectangular shape of lateral arrangement, the radiating fin (7) that a row is parallel to each other is provided with in the bottom of described crankcase body (1), top and the crankcase body (1) of this radiating fin (7) are connected as a single entity, be provided with one at the top of described cylinder block (2) along its true dip direction and ranked second cooling duct (8), distance between two adjacent second cooling ducts (8) is equal, the cross section of described second cooling duct (8) is also elongated rectangular shape, the length direction of this elongated rectangular shape is vertical with the shaft axis of cylinder block (2).
2. small air-cooled diesel engine crankcase body radiating structure according to claim 1, it is characterized in that: have angle theta between the horizontal axis of described Curved shaft support hole (4) and the shaft axis of cylinder block (2), this angle theta is 25-30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779660.XU CN204419390U (en) | 2014-12-10 | 2014-12-10 | Small air-cooled diesel engine crankcase body radiating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779660.XU CN204419390U (en) | 2014-12-10 | 2014-12-10 | Small air-cooled diesel engine crankcase body radiating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204419390U true CN204419390U (en) | 2015-06-24 |
Family
ID=53469768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420779660.XU Expired - Fee Related CN204419390U (en) | 2014-12-10 | 2014-12-10 | Small air-cooled diesel engine crankcase body radiating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204419390U (en) |
-
2014
- 2014-12-10 CN CN201420779660.XU patent/CN204419390U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |